[tests] Add test data for KT-53422

compiler/testData/diagnostics/tests/builderInference/issues/kt53422a.kt

@@ -0,0 +1,34 @@
+// ISSUE: KT-53422
+// CHECK_TYPE_WITH_EXACT
+
+fun test() {
+    val buildee = buildFromValue(
+        innerBuild <!BUILDER_INFERENCE_MULTI_LAMBDA_RESTRICTION!>{ setInnerTypeVariable(TargetType()) }<!>,
+        <!BUILDER_INFERENCE_MULTI_LAMBDA_RESTRICTION!>{ <!BUILDER_INFERENCE_STUB_RECEIVER!>it<!>.<!NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER!>placeholderExtensionInvokeOnInnerBuildee<!>() }<!>
+    )
+    // exact type equality check — turns unexpected compile-time behavior into red code
+    // considered to be non-user-reproducible code for the purposes of these tests
+    checkExactType<Buildee<InnerBuildee<TargetType>>>(buildee)
+}
+
+
+
+
+class TargetType
+
+class InnerBuildee<ITV> {
+    fun setInnerTypeVariable(value: ITV) { storage = value }
+    private var storage: ITV = null!!
+}
+
+fun <EITV> InnerBuildee<EITV>.placeholderExtensionInvokeOnInnerBuildee() {}
+
+class Buildee<TV>
+
+fun <IPTV> innerBuild(instructions: InnerBuildee<IPTV>.() -> Unit): InnerBuildee<IPTV> {
+    return InnerBuildee<IPTV>().apply(instructions)
+}
+
+fun <PTV> buildFromValue(value: PTV, instructions: Buildee<PTV>.(PTV) -> Unit): Buildee<PTV> {
+    return Buildee<PTV>().apply { instructions(value) }
+}